The plunge. Jennifer Lopez wore an exotic green Versace silk chiffon dress to the 42nd Grammy Awards with a neckline that went so far down (below the navel) that it had many wondering how she "kept it all in," so to speak.

The plunge. Jennifer Lopez wore an exotic green Versace silk chiffon dress to the 42nd Grammy Awards with a neckline that went so far down (below the navel) that it had many wondering how she "kept it all in," so to speak. (Vince Bucci / AFP/Getty Images)

Not to be outdone, at the 72nd Academy Awards in 2000, "Book of Mormon" creators Matt Stone and Trey Parker strode down the red carpet dressed as Jennifer Lopez and Gwyneth Paltrow. Their song "Blame Canada" from "South Park: Bigger, Longer & Uncut" was nominated for best original song.

Not to be outdone, at the 72nd Academy Awards in 2000, "Book of Mormon" creators Matt Stone and Trey Parker strode down the red carpet dressed as Jennifer Lopez and Gwyneth Paltrow. Their song "Blame Canada" from "South Park: Bigger, Longer & Uncut" was nominated for best original song. (Los Angeles Times)

Bjork's mock swan dress was designed by Macedonian designer Marjan Pejoski. The Icelandic singer wore the dress to the 2001 Oscar ceremony and completed the look by pretending to lay an egg on the red carpet.

Bjork's mock swan dress was designed by Macedonian designer Marjan Pejoski. The Icelandic singer wore the dress to the 2001 Oscar ceremony and completed the look by pretending to lay an egg on the red carpet. (Wally Skalij / Los Angeles Times)

Taking the Canadian Tuxedo to a new level, former Mickey Mouse Club stars Britney Spears and Justin Timberlake became a denim duo at the 2001 American Music Awards with matching custom-made outfits.

Taking the Canadian Tuxedo to a new level, former Mickey Mouse Club stars Britney Spears and Justin Timberlake became a denim duo at the 2001 American Music Awards with matching custom-made outfits. (Jeffrey Mayer / WireImage / Getty Images)